Restart Go program by itself.

[Jiahua Chen]

My friend asked me if there is anyway to avoid all track information after the program crashed, because it print hundreds of lines of track information if the program is large enough, finally we found out that we can use recover() to achieve this, and also, we found there is a approach to restart program by itself, I post here in case someone may not know yet.

func mymain() {   
    defer func() {
        recover()   
   }()
    ......// your code that was in real main().
}

func main() {
    for {
        mymain()   
   }
}

[Dave Cheney]

Sadly this won't work

http://play.golang.org/p/Kcps61WZH9

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[Jiahua Chen]

It seems doesn't work with goroutine, but this one is fine. http://play.golang.org/p/-p-NbIjCO4

[Dave Cheney]

If you are going to recommend this solution, then at least log the
reason for the panic. It will be especially important when people
contacting you for support when their process is looping because of
panic("out of memory")

[Jiahua Chen]

Good advice! I'll forward to him.